57303997 has 2 divisors, whose sum is σ = 57303998. Its totient is φ = 57303996.

The previous prime is 57303977. The next prime is 57304033. The reversal of 57303997 is 79930375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57062916 + 241081 = 7554^2 + 491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57303997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57303977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28651998 + 28651999.

It is an arithmetic number, because the mean of its divisors is an integer number (28651999).

Almost surely, 2^57303997 is an apocalyptic number.

It is an amenable number.

57303997 is a deficient number, since it is larger than the sum of its proper divisors (1).

57303997 is an equidigital number, since it uses as much as digits as its factorization.

57303997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 57303997 is about 7569.9403564361. The cubic root of 57303997 is about 385.5330716534.

The spelling of 57303997 in words is "fifty-seven million, three hundred three thousand, nine hundred ninety-seven".